java.lang.NoSuchMethodError: No interface method sort(Ljava/util/Comparator;) exception in sorting arraylist android

Question

I'm trying to sort an ArrayList in Java in Android app but I'm getting this weird exception.

Code:

eventsList.sort(new Comparator<Event>() {
        @Override
        public int compare(Event event, Event t1) {
            return event.getEventStartDate().compareTo(t1.getEventStartDate());
        }
    });

Exception:

java.lang.NoSuchMethodError: No interface method sort(Ljava/util/Comparator;)V in class Ljava/util/List; or its super classes (declaration of 'java.util.List' appears in /system/framework/core-libart.jar)

laalto · Accepted Answer · 2016-08-15T08:04:45.083

54

ArrayList#sort() was added in API level 24 and runtimes below API level 24 don't have that method. Looks like your compileSdkVersion is at 24 so you got the code to compile in the first place.

Use Collections.sort(list, comparator) instead.

edited Aug 15 '16 at 08:04

answered Aug 15 '16 at 08:02

laalto

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3

mmmm, I used to use `Collection.sort` long back ago but today I just found this method in code completion in Android studio but likely it was a trap :). Thanks – Hossam Ghareeb Aug 15 '16 at 08:06

score 30 · Answer 2 · answered Sep 21 '19 at 13:42

30

Zxing?

If you get this error in the Zxing core lib in com.google.zxing.qrcode.detector.FinderPatternFinder.selectBestPatterns you can solve it by downgrading Zxing to 3.3.x (3.3.3 currently).

See https://github.com/zxing/zxing/issues/1170 for details.

answered Sep 21 '19 at 13:42

tobltobs

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score 15 · Answer 3 · answered Mar 24 '21 at 06:06

15

In Zxing no need to downgrade version

just add following in App level gradle

android{
....
    compileOptions {
        coreLibraryDesugaringEnabled true
        sourceCompatibility = '1.8'
        targetCompatibility = '1.8'
    }

}

and

dependencies {
    ......
    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'
}

answered Mar 24 '21 at 06:06

code4rox

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I found [this same answer elsewhere](https://github.com/zxing/zxing/issues/1170#issuecomment-555860273) but THIS is the right thing to do in 2021 so I upvoted. – gMale Jun 06 '21 at 23:11
1

this solution worked for me too as I didn't want to downgrade – dubezOniner Dec 05 '21 at 08:35

score 6 · Answer 4 · answered Aug 15 '16 at 07:53

6

What if you try

Collections.sort(eventsList, new Comparator...

As far as I know ArrayList doesn't have sort method.

answered Aug 15 '16 at 07:53

mic4ael

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score 4 · Answer 5 · answered Aug 15 '16 at 07:55

List doesn't have its own sorting method, you'll need to call

Collections.sort()

as the method on the list. If this returns a ClassCastError, that means the list has non-sortable items. I think this should fix it, but without full code, it's hard to check.

score 2 · Answer 6 · answered Dec 21 '17 at 07:04

ArrayList.sort() method was added later that's why its not working. We can update java version (1.8) or we can use below method.

Collections.sort(eventList, new Comparator<Event>() {
        @Override
        public int compare(Event event, Event t1) {
            return event.getEventStartDate().compareTo(t1.getEventStartDate());
        }
});

java.lang.NoSuchMethodError: No interface method sort(Ljava/util/Comparator;) exception in sorting arraylist android

6 Answers6

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